Eruptive tumor of the follicular infundibulum with unusual clinical presentation: A case report and literature review

Abstract

Eruptive tumor of the follicular infundibulum (TFI) is an extremely rare benign neoplasm that usually presents as asymptomatic multiple hypopigmented macules symmetrically distributed on the head, neck, and upper trunk. Herein, we report a case of eruptive TFI presenting as hypopigmented macules with central and slightly elevated erythematous papules at rarely involved locations of the four extremities, which has not been reported previously. The pathology showed characteristic features that were conclusive of the diagnosis of eruptive TFI. Because hypopigmentation is a common clinical manifestation and malignant transformation is possible with eruptive TFI, correct early diagnosis, and regular follow-ups are recommended.

Keywords

• eruptive tumor of the follicular infundibulum
• hypopigmented macules
• macules
• tumor of the follicular infundibulum